This only started today, but almost the entire school of Harlequin Rasboras in my tank are all confining themselves into the bottom left corner of the tank, just kind of twitching and wiggling in place. I managed to get one of them on camera, but keep in mind that there's 4 out of the school just doing this for hours side by side:
https://www.youtube.com/watch?v=BQDiJ9S6cFA
Should I be concerned? I thought it was just a weird mating ritual, but they've been doing this for hours together and nothing else.
https://www.youtube.com/watch?v=BQDiJ9S6cFA
Should I be concerned? I thought it was just a weird mating ritual, but they've been doing this for hours together and nothing else.